But the biggest development in the seas was the appearance of whales in the mid- to late Paleogene. The huge animals evolved from land mammals that took to the seas. Meanwhile, smaller reptiles ...

During the Paleogene period, most of the Earth’s climate ... it is beneficial to discuss the animal population by the milestone of the era rather than in generalities. The Neogene period gives ...

The dinosaurs were killed by a meteorite impact on the Earth some 66 million years ago in what has become known as the Cretaceous-Paleogene extinction event. At what time of the year this occurred ...

What you need to know first — Why did some animals survive the Cretaceous–Paleogene (K–Pg) mass extinction event while others got wiped off the face of the Earth? Scientists have long ...

The shape of some teeth from Cretaceous animals suggests that the herbivores ... it marks the boundary between the Cretaceous and Paleogene periods; the "K" is from "Kreide," the German word ...

At that point, as the Cretaceous period yielded to the Paleogene, it seems that all nonavian dinosaurs suddenly ceased to exist. One of the most well-known theories for the death of the dinosaurs ...

Their results showed that over 93 per cent became extinct across the Cretaceous-Paleogene (K-Pg ... most of the plants and animals would have died, so the survivors probably fed on insects ...

The scientists analysed samples of the rock layer that marks the boundary between the Cretaceous and Paleogene periods ... in which around 70 percent of all animal species became extinct.

Starving animals soon followed suit ... began to investigate rocks on the border between the Cretaceous and Paleogene geologic periods. The Alvarez team discovered the element iridium ...